<template>
    <div class="user-info-head" @click="editCropper()">
        <img :src="options.img" title="点击上传头像" class="img-circle img-lg"/>
        <el-dialog :title="title" v-model="open" width="800px" append-to-body @opened="modalOpened"
                   @close="closeDialog">
            <el-row>
                <el-col :xs="24" :md="12" :style="{ height: '350px' }">
                    <vue-cropper
                            ref="cropper"
                            :img="options.img"
                            :info="true"
                            :autoCrop="options.autoCrop"
                            :autoCropWidth="options.autoCropWidth"
                            :autoCropHeight="options.autoCropHeight"
                            :fixedBox="options.fixedBox"
                            :outputType="options.outputType"
                            @realTime="realTime"
                            v-if="visible"
                    />
                </el-col>
                <el-col :xs="24" :md="12" :style="{ height: '350px' }">
                    <div class="avatar-upload-preview">
                        <img :src="options.previews.url" :style="options.previews.img"/>
                    </div>
                </el-col>
            </el-row>
            <br/>
            <el-row>
                <el-col :lg="2" :md="2">
                    <el-upload
                            action="#"
                            :http-request="requestUpload"
                            :show-file-list="false"
                            :before-upload="beforeUpload"
                    >
                        <el-button>
                            选择
                            <el-icon class="el-icon--right">
                                <Upload/>
                            </el-icon>
                        </el-button>
                    </el-upload>
                </el-col>
                <el-col :lg="{ span: 1, offset: 2 }" :md="2">
                    <el-button icon="Plus" @click="changeScale(1)"></el-button>
                </el-col>
                <el-col :lg="{ span: 1, offset: 1 }" :md="2">
                    <el-button icon="Minus" @click="changeScale(-1)"></el-button>
                </el-col>
                <el-col :lg="{ span: 1, offset: 1 }" :md="2">
                    <el-button icon="RefreshLeft" @click="rotateLeft()"></el-button>
                </el-col>
                <el-col :lg="{ span: 1, offset: 1 }" :md="2">
                    <el-button icon="RefreshRight" @click="rotateRight()"></el-button>
                </el-col>
                <el-col :lg="{ span: 2, offset: 6 }" :md="2">
                    <el-button type="primary" @click="uploadImg()">提 交</el-button>
                </el-col>
            </el-row>
        </el-dialog>
    </div>
</template>

<script setup>
    import "vue-cropper/dist/index.css";
    import {VueCropper} from "vue-cropper";
    import {uploadAvatar} from "@/api/system/user";
    import useUserStore from "@/store/modules/user";

    const userStore = useUserStore();
    const {proxy} = getCurrentInstance();

    const open = ref(false);
    const visible = ref(false);
    const title = ref("修改头像");

    //图片裁剪数据
    const options = reactive({
        img: userStore.avatar,     // 裁剪图片的地址
        autoCrop: true,            // 是否默认生成截图框
        autoCropWidth: 200,        // 默认生成截图框宽度
        autoCropHeight: 200,       // 默认生成截图框高度
        fixedBox: true,            // 固定截图框大小 不允许改变
        outputType: "png",         // 默认生成截图为PNG格式
        filename: 'avatar',        // 文件名称
        previews: {}               //预览数据
    });

    /** 编辑头像 */
    function editCropper() {
        open.value = true;
    }

    /** 打开弹出层结束时的回调 */
    function modalOpened() {
        visible.value = true;
    }

    /** 覆盖默认上传行为 */
    function requestUpload() {
    }

    /** 向左旋转 */
    function rotateLeft() {
        proxy.$refs.cropper.rotateLeft();
    }

    /** 向右旋转 */
    function rotateRight() {
        proxy.$refs.cropper.rotateRight();
    }

    /** 图片缩放 */
    function changeScale(num) {
        num = num || 1;
        proxy.$refs.cropper.changeScale(num);
    }

    /** 上传预处理 */
    function beforeUpload(file) {
        if (file.type.indexOf("image/") == -1) {
            proxy.$modal.msgError("文件格式错误，请上传图片类型,如：JPG，PNG后缀的文件。");
        } else {
            const reader = new FileReader();
            reader.readAsDataURL(file);
            reader.onload = () => {
                options.img = reader.result;
                options.filename = file.name;
            };
        }
    }

    /** 上传图片 */
    function uploadImg() {
        proxy.$refs.cropper.getCropBlob(data => {
            let formData = new FormData();
            formData.append("avatarfile", data, options.filename);
            uploadAvatar(formData).then(response => {
                open.value = false;
                options.img = import.meta.env.VITE_APP_BASE_API + response.imgUrl;
                userStore.avatar = options.img;
                proxy.$modal.msgSuccess("修改成功");
                visible.value = false;
            });
        });
    }

    /** 实时预览 */
    function realTime(data) {
        options.previews = data;
    }

    /** 关闭窗口 */
    function closeDialog() {
        options.img = userStore.avatar;
        options.visible = false;
    }
</script>

<style lang='scss' scoped>
    .user-info-head {
        position: relative;
        display: inline-block;
        height: 120px;
    }

    .user-info-head:hover:after {
        content: "+";
        position: absolute;
        left: 0;
        right: 0;
        top: 0;
        bottom: 0;
        color: #eee;
        background: rgba(0, 0, 0, 0.5);
        font-size: 24px;
        font-style: normal;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        cursor: pointer;
        line-height: 110px;
        border-radius: 50%;
    }
</style>